Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
1999-09-24
2004-07-06
Vu, Kim (Department: 2172)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000
Reexamination Certificate
active
06760719
ABSTRACT:
A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
FIELD OF THE INVENTION
The subject invention relates generally to data processing and more particularly to a method and apparatus for high speed parallel accessing of data stored at a number of remote heterogeneous sites.
BACKGROUND OF THE INVENTION AND RELATED ART
Present technology is witnessing the development of large remote databases or “data warehouses”, as well as rapid expansion of the Internet and proliferation of corporate intranets. Demand is growing for increasingly large and rapid data transfers involving streaming video, visualization graphics and large data warehouse downloads over such new network protocols as the Fast Ethernet and Gigabyte Ethernet. The data which it would be desirable to access may be stored across heterogeneous sites, i.e., sites which contain different types of database systems or other data containers. Hence the data which may need to be accessed may be referred to as “heterogeneous data.”.
At the same time, there is constant pressure to simplify the user interface to a vast array of components and data. While individual components in a particular solution are often easy to use, combining them in a complete solution still presents extremely complex problems to the user.
SUMMARY OF THE INVENTION
The invention provides automatic parallel accessing, extraction and manipulation (e.g., sorting) of data from multiple heterogeneous data sites in response to a simple query or request from the user. A query may constitute a search or sort request or a myriad of other queries. The invention further involves the use of an interpreter or “Agent”, which receives a query or request, e.g., in the form of a JAVA script, and may for example, break the script into new scripts respectively appropriate for each node of a distributed system.
The invention further provides a method for metadata-based high level abstraction of a federation of clustered or distributed heterogeneous databases and/or data files in which the federation of databases is referenced or treated as a single object, as well as an apparatus for parallel data access and concurrent execution of object methods across the distributed data. The single object is referenced hereafter as the “data source object,” sometimes abbreviated to simply “data object.”
Still other objects, features and advantages of the present invention will become readily apparent to those skilled in the art from the following detailed description, wherein is shown and described only the preferred embodiment of the invention, simply by way of illustration of the best mode contemplated of carrying out the invention. As will be realized, the invention is capable of other and different embodiments, and its several details are capable of modifications in various obvious respects, all without departing from the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive, and what is intended to be protected by Letters Patent is set forth in the appended claims. The present invention will become apparent when taken in conjunction with the following description and attached drawings, wherein like characters indicate like parts, and which drawings form a part of this application.
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Hanson Charles Albin
Johnson Thomas Winston
O'Hara Carol Jean
Poon Koon-yui
Redding Roger Anthony
Hoang Phuong-Quan
Rode Lise A.
Starr Mark T.
Truong Cam y
Unisys Corp.
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